The problem with your utopia is that...
... there just IS NOT enough wealth in the world to go round....
If you take the estimated amount of currency in the U.S., Asia and Europe, and then round it up to the nearest hundred billion (to account for the fact that a lot of nations don't actually know how much money is in their country), and then turn it all into U.S. dollars, you'll come up with $34,370,000,000,000 dollars. That's $34 trillion. And if you divide that by the number of people on the planet, which is over 6.6 billion, you get $5,203.60. That means there there's only five thousand dollars available for every man, woman and child on the planet!
How comfortable to you believe YOU would be living on a little over $5,000.00 per annum?
Given that most people access their share of the $34 trillion out there via some form of credit, (VISA anyone?), the accumulated interest on the debt comsumes upwards of 20% of their annual 5 grand.. So the world's wealth is quietly dissappearing down a rabbit hole.
The only saving grace to that is the productivity of a very small percentage of the planets surface which continues to generate wealth in the form of minerals and food. Should the supply of new wealth ever begin to drop off, (Peak Oil comes to mind), we are all going to be in pretty bad shape.
The only way EVERYONE can have comfortable lives if is there are fewer of us. So, until people stop having more babies, the concept of EVERYONE living comfortable lives will remain a sad self-delusion that is only affordable to those who ALREADY HAVE comfortable lives.